:root{
  --bg:#fbf9f6; --bg-2:#f5f1ea; --ink:#191714; --ink-2:#57524b; --ink-3:#8b847a;
  --line:#e4ded3; --accent:#b4472a; --accent-2:#8f3320; --ok:#2f6b4f; --warn:#9a6b1f;
  --r:14px; --wrap:1080px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0; background:var(--bg); color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  font-size:16px; line-height:1.75; -webkit-font-smoothing:antialiased;
}
img,svg{max-width:100%}
a{color:var(--accent-2); text-decoration:none}
a:hover{text-decoration:underline; text-underline-offset:3px}
code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace; font-size:.9em; background:var(--bg-2); padding:.1em .35em; border-radius:5px}
.skip{position:absolute; left:-9999px}
.skip:focus{left:12px; top:12px; background:#fff; padding:8px 12px; z-index:99; border-radius:8px}
.wrap{max-width:var(--wrap); margin:0 auto; padding:0 24px}

/* nav */
.nav{position:sticky; top:0; z-index:20; background:rgba(251,249,246,.86); backdrop-filter:blur(10px); border-bottom:1px solid var(--line)}
.nav-in{display:flex; align-items:center; justify-content:space-between; gap:16px; min-height:60px}
.brand{display:flex; align-items:center; gap:9px; font-weight:600; color:var(--ink); letter-spacing:.01em; white-space:nowrap; flex:0 0 auto}
.brand:hover{text-decoration:none}
.brand-mark{width:13px; height:13px; border:2px solid var(--accent); border-radius:3px; display:inline-block; transform:rotate(45deg)}
.nav-links{display:flex; gap:20px; font-size:14px; color:var(--ink-2); overflow-x:auto; scrollbar-width:none; -ms-overflow-style:none; min-width:0}
.nav-links::-webkit-scrollbar{display:none}
.nav-links a{white-space:nowrap}

/* hero */
.hero{padding:72px 0 56px; border-bottom:1px solid var(--line)}
.kicker{margin:0 0 18px; font-size:13px; letter-spacing:.08em; color:var(--accent); text-transform:uppercase}
.hero h1{margin:0; font-size:clamp(38px,7vw,68px); line-height:1.12; letter-spacing:-.02em; font-weight:700}
.hero h1 em{font-style:normal; color:var(--accent); position:relative}
.hero h1 em::after{content:""; position:absolute; left:0; right:0; bottom:.06em; height:.12em; background:rgba(180,71,42,.16); z-index:-1}
.lede{max-width:62ch; margin:26px 0 0; font-size:17px; color:var(--ink-2)}
.hero-actions{display:flex; flex-wrap:wrap; gap:12px; margin-top:30px}
.btn{display:inline-block; padding:11px 20px; border-radius:999px; font-size:15px; font-weight:500; border:1px solid transparent; transition:transform .15s ease, background .15s ease}
.btn:hover{text-decoration:none; transform:translateY(-1px)}
.btn-primary{background:var(--ink); color:#fff}
.btn-primary:hover{background:#000}
.btn-ghost{border-color:var(--line); color:var(--ink); background:transparent}
.btn-ghost:hover{background:var(--bg-2)}
.stats{display:grid; grid-template-columns:repeat(3,1fr); gap:20px; margin:44px 0 0; padding-top:26px; border-top:1px dashed var(--line)}
.stats div{}
.stats dt{font-size:26px; font-weight:700; letter-spacing:-.01em}
.stats dd{margin:2px 0 0; font-size:13.5px; color:var(--ink-3)}

/* sections */
.sec{padding:76px 0; border-bottom:1px solid var(--line)}
.sec-alt{background:var(--bg-2)}
.sec-no{margin:0 0 10px; font-size:12px; letter-spacing:.18em; color:var(--ink-3)}
.sec h2{margin:0; font-size:clamp(24px,3.4vw,34px); letter-spacing:-.01em; line-height:1.3}
.sec-lede{max-width:64ch; margin:16px 0 0; color:var(--ink-2); font-size:15.5px}

/* cards */
.cards{display:grid; grid-template-columns:repeat(3,1fr); gap:18px; margin-top:36px}
.card{background:#fff; border:1px solid var(--line); border-radius:var(--r); padding:24px}
.card h3{margin:0 0 10px; font-size:16.5px}
.card p{margin:0; font-size:14.5px; color:var(--ink-2)}

/* levels */
.levels{list-style:none; margin:34px 0 0; padding:0; display:grid; gap:14px}
.levels li{display:flex; gap:22px; align-items:flex-start; background:#fff; border:1px solid var(--line); border-radius:var(--r); padding:22px 24px}
.lv{flex:0 0 auto; font-weight:700; font-size:15px; color:var(--accent); border:1px solid rgba(180,71,42,.35); border-radius:8px; padding:3px 9px; line-height:1.5}
.levels h3{margin:0 0 6px; font-size:16.5px}
.levels p{margin:0; font-size:14.5px; color:var(--ink-2)}
.levels .check{margin-top:8px; font-size:13.5px; color:var(--ok)}

/* syllabus */
.syllabus{list-style:none; margin:34px 0 0; padding:0; display:grid; grid-template-columns:repeat(2,1fr); gap:16px}
.syllabus li{position:relative; background:#fff; border:1px solid var(--line); border-radius:var(--r); padding:22px 24px 20px}
.wk{display:inline-block; font-size:12px; letter-spacing:.06em; color:#fff; background:var(--ink); border-radius:999px; padding:2px 10px; margin-bottom:12px}
.syllabus h3{margin:0 0 8px; font-size:16.5px; line-height:1.45}
.syllabus p{margin:0; font-size:14.5px; color:var(--ink-2)}
.syllabus .out{margin-top:10px; font-size:13.5px; color:var(--ok)}

/* templates */
.tpl-group{margin-top:34px}
.tpl-group h3{margin:0 0 12px; font-size:15px; color:var(--ink-3); font-weight:600; letter-spacing:.02em}
.tpl-list{list-style:none; margin:0; padding:0; display:grid; grid-template-columns:repeat(2,1fr); gap:8px}
.tpl-list li{display:flex; align-items:center; gap:10px; flex-wrap:wrap; background:#fff; border:1px solid var(--line); border-radius:10px; padding:10px 14px; font-size:14.5px}
.tpl-name{flex:1 1 auto; min-width:0}
.chip{font-size:12px; color:var(--ink-3); border:1px solid var(--line); border-radius:999px; padding:1px 8px; white-space:nowrap}
.badge{font-size:12px; border-radius:999px; padding:1px 9px; white-space:nowrap}
.badge-ok{color:var(--ok); background:rgba(47,107,79,.09)}
.badge-warn{color:var(--warn); background:rgba(154,107,31,.11)}
.tpl-link{font-size:13px; border-bottom:1px solid rgba(143,51,32,.3)}
.tpl-more{display:flex; flex-wrap:wrap; gap:12px; margin-top:32px}

.picker{margin-top:28px; background:#fff; border:1px solid var(--line); border-radius:var(--r); padding:0}
.picker summary{cursor:pointer; padding:16px 20px; font-size:14.5px; font-weight:500; list-style:none}
.picker summary::-webkit-details-marker{display:none}
.picker summary::before{content:"▸ "; color:var(--accent)}
.picker[open] summary::before{content:"▾ "}
.picker-body{padding:0 20px 18px; font-size:14.5px; color:var(--ink-2)}
.picker-body p{margin:0 0 10px}

/* deliverable */
.grid-2{display:grid; grid-template-columns:repeat(2,1fr); gap:32px; margin-top:32px}
.grid-2 h3{margin:0 0 14px; font-size:16px}
.ticks{list-style:none; margin:0; padding:0; display:grid; gap:10px; font-size:14.5px; color:var(--ink-2)}
.ticks li{position:relative; padding-left:22px}
.ticks li::before{content:"✓"; position:absolute; left:0; color:var(--ok); font-weight:700}

/* wall */
.empty{margin-top:28px; background:#fff; border:1px dashed var(--line); border-radius:var(--r); padding:40px 28px; text-align:center}
.empty-title{margin:0 0 8px; font-size:17px; font-weight:600}
.empty p{margin:0; font-size:14.5px; color:var(--ink-2)}

/* faq */
.faq{display:grid; gap:10px; margin-top:30px}
.faq details{background:#fff; border:1px solid var(--line); border-radius:12px; padding:0}
.faq summary{cursor:pointer; padding:15px 20px; font-size:15px; font-weight:500; list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::before{content:"+ "; color:var(--accent); font-weight:700}
.faq details[open] summary::before{content:"− "}
.faq p{margin:0; padding:0 20px 18px; font-size:14.5px; color:var(--ink-2)}

/* legal */
.sec-legal{background:#fff}
.legal-list{margin:24px 0 0; padding-left:20px; font-size:14px; color:var(--ink-2); display:grid; gap:9px}
.legal-list strong{color:var(--ink)}

/* footer */
.foot{padding:34px 0 44px}
.foot-in{display:flex; flex-wrap:wrap; gap:10px 18px; align-items:center; justify-content:space-between; font-size:13px; color:var(--ink-3)}
.foot p{margin:0}
.foot-links a{color:var(--ink-2)}


@media (max-width:860px){
  .cards,.syllabus,.grid-2,.tpl-list{grid-template-columns:1fr}
  .hero{padding:52px 0 44px}
  .stats{grid-template-columns:1fr; gap:14px}
  .levels li{flex-direction:column; gap:12px}
  .nav-links{gap:14px; font-size:13px}
  .brand{font-size:15px}
}
@media (max-width:520px){
  .nav-in{gap:10px; min-height:56px}
  .brand{font-size:14px}
  .nav-links{gap:12px; font-size:12.5px}
  .wrap{padding:0 18px}
  .hero h1{font-size:34px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .btn:hover{transform:none}
  *{transition:none!important; animation:none!important}
}